CapyToolkit
Free browser utilities for hardware testing, dev work, and security
Visit capytoolkit.com ↗What is CapyToolkit?
CapyToolkit is a collection of browser-based tools for developers, engineers, and everyday users. It includes hardware diagnostics (gamepad drift, input lag, MIDI testing), developer utilities (JSON formatting, URL parsing, SQL workbench with DuckDB), audio analysis, security tools (hash generators, PII scrubbers), and personal utilities like PDF conversion and passport photo cropping. Everything runs locally in your browser with no server uploads or account required.
The maker says most tools were built with AI assistance since early 2025, though vision and decisions remained theirs. The site is built with Astro and installable as a PWA or via Microsoft Store. Privacy is central: no tracking in tool areas, and analytics use PostHog proxied through a subdomain.
Momentum
Daily activity over the last 30 days: upvotes, unique visits, new GitHub stars and Hacker News points.
How do we know it's vibe coded?
vibetrend discovered CapyToolkit automatically. Evidence: HN post: "Since early 2025, I've been implementing almost everything with AI but the vision and decisions are mine.". View source.
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